It seems the Pb-1 does do high pass filtering using the line level connections.I'll be darn.So what it seems Johnk is saying is to disconnect the jumpers on the reciever send the signal from the preouts of the reciever to the inputs on the sub then the outputs of the sub back to the inputs of the amp section.If thats the case thats a pretty nice feature my subs don't have.

Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud